Swift Realm, load the pre-populated database the right way?

Question

I\'m pretty new to ios development.

I follow this migration example to use pre-populated database and change the code a little bit

here is the final code I u

Answer 1

try this

    let realm_db_path     = Realm.Configuration.defaultConfiguration.fileURL!
    let bundle_realm_path = Bundle.main.url(forResource: "default", withExtension: "realm")!

    if !FileManager.default.fileExists(atPath: realm_db_path.absoluteString){
        do {

            try FileManager.default.copyItem(at: bundle_realm_path, to: realm_db_path)

        }catch let error {

            NSLog(error as! String)

        }